Our brain is left and right hemisphere by design as well. There is good reason for that. The idea is that they keep us balanced. 

We need to conserve somethings, as well as liberate ourselves from others. The two party system idea is great, but the problem is that mass media has pushed the public perception so far left, that anything right seems wrong. We are addicted to more. Mass media creates addictions for more by design.

Left and right, Democrat and Republican, dont hurt us when they honestly balance one another, but our perception of them does, and this has been heavily skewed by a mass media that is supported, emboldened, directed, and made wealthier by the political left.